Inset casing float valve



Feb. 23 1926. 1,574,537

A. P. BURCH INSET CASING FLOAT VAL'VE- Filed July 27, 1923 Patented Feb.23, 1926.

UNITED starts ALLEN P. BURCH, 0F WHITTIER, SALIFQR'NIA.

INSET CASING Application filed July 27,

To all whom it may concern Be it known that I, ALLEN P. BURCH, a citizenof the United States, residing at \Vhittier, in the county of LosAngeles and 5 State of California, have invented new and useful Imrovements in Inset Casing Float Valves, 0 which the following is aspecification.

This invention relates to deep well apparatus and has for an objectto'provide an inset, casing float valve.

An object is to provide in combination a deep well casing and a floatvalve arranged up inside of the casin a suitable distance above thelower end oi the same to protect the valve from cave-ins and detritusthat may be encountered by the entering guide piece of the casing.

Otherobjects and advantages-will be made '20 manifest in the followingspecification of an embodiment of the invention as illustrated in theaccompanying drawings, wherein:

, Fig. l is a longitudinal section of the apparatus as in use. c Fig. 2is a side elevation of the detached casing valve.

Fig. 3 is a top plan,

Fig. 4 is a bottom end view.

It has been proposed to utilize valves in drilling apparatus and mypresent improvement consists of a valve that is adapted to be mounmdwithin a collar or coupling 2 joining a lower casing section 3 andanupper casing section 3*, The valve consists of a substantial body part5 having a threaded .rim 6 to engage the internal, threads of the collar2, The valve body 5 is provided with a plurality of ports 7 leading to acentrai valve space in the body in which is arranged a ball valve 8normally pressed toward the upper end or? the valve by a spring 9,

In the tower end of the valve body is a removahie spring sup'oor ingping it The vaive hody is provided at its upper end with a vaive hole itbelow which the valve haii 8 seats to cut oft" upward How of fluid intothe upper of easing above the lower section or sections 3,

din ariiy the iowermost casing section is 1 i with a standard. orsuitable guide i52 perforated to aiiow downward FLGAT VALVE.

1923. Serial 1V0. 654,168.

flow of fluid which may be pumped down variations may be resorted towithin the spirit of my invention.

What is claimed is: 1.. In combination a string of easing sections,contiguous ends ofcertain sections having a collar screw-threaded on theoutside of the casing sections, an inserted float valve having a bodypart, a rim at the upper portion thereof, screw threads on the exterior-of the rim, abutting faces on the top and bottom of the rim, saidabutting faces engaging the-contiguous ends of the casing sections andthe threaded portion engaging the collar, a valve hole inthe upper partof the body portion, a downwardly extending passage, a plug at the lowerend of the passage, a spring bearing.

against the pliig, a hall engaging the upper end of the spring wherebythe hall maybe pressed against the valve hole, and a series of portsthrough the body, the inner ends of such ports being of less width thanthe diameter-oi the hall, wherehy the ball is re.- tained in saidpassage. v

A casing float valve comprising in comat its upper end, abutting facesabove and heiow the rim, said being adapted to engage an upper and atower casing pipe section and a. rim being adapted to engage the coiiarscrew threaded on the casing pipe sections and the rim, a hoie in theupper portion oi? the valve body, passage extending downwardly from thevalve hole, a ball valve said passage and of suhstantialiy the hinationa valve body having a threaded ports at their inner end being of lesserWidth than the diameter of the said passage, whereby the ball valve isretained in the said passage. 10

In testimony whereof I have signed my name tothis specification.

ALLEN P. BURCH.

